摘要
矿样经氯酸钾硝酸溶液加王水混合试剂分解 ,泡沫塑料吸附金溴络合物、硫脲溶液解脱 ,直接用火焰原子吸收光谱法测定金。
Mineral samples were decomposed and dissolved with a mixed acid solution containing potassium chlorate, nitric acid and hydrochloric acid. Gold(Ⅲ) in the form of anionic complex with bromide was separated and preconcentrated by adsorption on foaming plastics, and then desorbed with thiourea solution. The gold in the desorbing solution was determined directly by FAAS. The limit of determination of this method was at the concentration level of 10 -6 μg·g -1 (mass percentage). Recoveries tested by standard addition method were in the range of 94.5%～98.8%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2003年第6期347-348,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
